Courtesy Lighting / Key Lighting / Glove Compartment Lighting

Fig 1: Courtesy Lighting, Key Lighting And Glove Compartment Lighting Input And Output Signals

Courtesy of VOLVO CARS OF NORTH AMERICA.

The courtesy lighting (10/122-123, 10/125-126), keyhole (16/65) and glove compartment lighting (10/29) are controlled via the central electronic module (CEM) (4/56). All other interior lighting is controlled by the upper electronic module (UEM) (4/70). (See Design and Function, upper electronic module (UEM)). The central electronic module (CEM) powers the lamps which it controls directly.

The lamps are powered if a door is opened (3/74-77), or when the upper electronic module (UEM) transmits a request via the control area network (CAN). The upper electronic module (UEM) transmits a request when it has received an unlock command from one of the remote controls. If a door is opened, the central electronic module (CEM) sends a control area network (CAN) signal to the upper electronic module (UEM) to light the lighting it controls.

The glove compartment lighting (10/29) is supplied with power directly from the central electronic module (CEM) when the switch by the lamp is activated when the glove compartment is opened.